Cossack of ATK, Alberta, for petroleum industry in very deep mud. It is issued from Commander 6x6 of Foremost. www.atkoilfield.com http://www.franceroutes.fr/actualites/un-cosaque-au-canada/

Timbear Lightlogg C forwarder, from the Timbear AB Swedish Company, articulated with 6 tracks low ground pressure to minimize ground compaction. The length of the vehicle was variable to fit to timbers. Sadly, the company, founded in 2008, has filed for bankruptcy on March 18, 2014. It was ahead of its time for the reduction of soil compaction. http://www.timbear.se/, https://www.youtube.com/watch?v=PiHKE6jnP64, https://www.youtube.com/watch?v=BMT_RY1eu8I, https://www.youtube.com/watch?v=_0ci2xvqB_8, https://www.youtube.com/user/TimbearAB

Coupled M 113 were tested between 1972 and 1982 by U. S. Army Materiel Command and Keweenaw Research Center. An electro-hydraulic system allow articulation in yaw, pitch and roll between two M 113 to enhance mobility, particularly crossing of vertical obstacles and trenches. Speed in water was increased and in soft terrains, steering did not slow down or stop the vehicle. This device was not adopted. http://www.dtic.mil/dtic/tr/fulltext/u2/777799.pdf, http://fr.slideshare.net/ISTVS/tardec-50-years-slides

Komatsu 895 wide tracks forwarder. Low ground pressure conversion to forestry forwarder JCC will also be showcasing the revolutionary low ground pressure works recently installed onto a forestry forwarder for Drew Graham Contracting. This involves redesigning the axle & chassis of the forwarder to work with 2000mm tracks to ensure maximum areas of operation & low ground pressure capabilities. Detailed engineering design by our John Craig ensured that the tracks were fabricated to exact specifications and with additional links for support. From : http://scotplant.com/2014/03/25/engcon-generation2-ec209-with-new-svab-control-systems-for-track-wheel-control/

Concept of tracked forwarder, 2015. Forestry Research Institute, Skogforsk, tests military rubber tracks of BAE Systems Hägglünds for forwarder to minimize impact on the ground, increases speed (x2) and brings comfort to the wheels. https://translate.google.fr/translate?hl=fr&sl=sv&u=http://www.nyteknik.se/innovation/militar-bandteknik-ska-skona-skogen-6394210&prev=search, https://twitter.com/angiesoderberg

SCA tests for tracked vehicle as forwarders, 2013. Heavy 40 t wheeled forwarders may leave deep depressions in the forest floor especially when wet, that causes an outflow of water that brings humus into the streams. The track marks are not a huge problem as they are superficial. http://www.sca.com/en/Media/News-features/2013/A-lighter-forest-footprint/

Tests of rubber tracked forwarder by Forest Research Institute of Sweden. http://www.skogforsk.se/kunskap/kunskapsbanken/2016/militar-teknik-kan-minska-skadorna-i-skogen/